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首页> 外文期刊>Genetic Resources and Crop Evolution >Close genetic proximity between cultivated and wild Bactris gasipaes Kunth revealed by microsatellite markers in Western Ecuador.
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Close genetic proximity between cultivated and wild Bactris gasipaes Kunth revealed by microsatellite markers in Western Ecuador.

机译：厄瓜多尔西部的微卫星标记揭示了栽培的和野生的Bactris gasipaes Kunth之间的紧密遗传接近。

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Bactris gasipaes Kunth (peach palm or Pejibaye) is the only domesticated palm of the Neotropics. The genetic relationships between the crop and its wild relatives are still unclear. We undertook field and laboratory work in order to describe differentiation and relationships between the wild and cultivated populations of the species in Western Ecuador, and their possible interactions. A volumetric study was undertaken on the fruits of both populations, as well as a population genetic analysis in order to clarify these relationships. Fruits from cultivated plants collected in the region of sympatry of wild and cultivated plants in North-West Ecuador showed intermediate volumes between those of reference samples for the wild and cultivated plants in allopatry. Using 8 microsatellite loci, we assessed 83 wild and cultivated individuals from Western Ecuador and cultivated plants from Amazonia and Central America as a reference for the cultivated form. We detected high polymorphism in the wild and cultivated samples and low, but significant level of genetic differentiation between wild and cultivated populations. The cultivated population in North-Western Ecuador showed close genetic proximity with the sympatric wild population, consistent with the volumetric study. These results have implications for hypotheses on evolution of this crop and for strategies of genetic conservation of the wild forms..
机译：Bactris gasipaes Kunth（桃棕榈或Pejibaye）是新热带地区唯一被驯化的棕榈。作物及其野生近缘种之间的遗传关系仍然不清楚。我们进行了野外和实验室工作，以描述西厄瓜多尔该物种的野生种群和耕种种群之间的分化和关系，以及它们之间可能的相互作用。为了阐明这两种关系，对这两个种群的果实进行了体积研究，并进行了种群遗传分析。在西北厄瓜多尔的野生和栽培植物交界处收集的栽培植物的果实显示出同种异体野生和栽培植物参考样品之间的中间体积。使用8个微卫星基因座，我们评估了来自西厄瓜多尔的83个野生和栽培个体以及来自亚马逊和中美洲的栽培植物，作为栽培形式的参考。我们在野生和栽培样品中检测到高多态性，而在野生和栽培群体中检测到低水平但显着水平的遗传分化。厄瓜多尔西北部的耕种人口与同胞野生人口遗传亲缘关系密切，这与体积研究一致。这些结果对这种作物的进化假说和野生形式的遗传保护策略都有影响。

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